circulation heater
51Polymath — A polymath (Greek polymathēs , πολυμαθής, having learned much )The term was first recorded in written English in the early seventeenth century Cite web url=http://www.etymonline.com/index.php?search=polymath searchmode=none title=Online Etymology …
52Cassini–Huygens — Artist s concept of Cassini s Saturn Orbit Insertion Operator NASA / ESA / ASI Mission type …
53English language idioms derived from baseball — B = * ballpark: in the ballpark, ballpark figure, and out of the ballpark mdash; Ballpark has been used to mean a broad area of approximation or similarity, or a range within which comparison is possible; this usage OED dates to 1960. Another… …
54Polyethylene terephthalate — PETE redirects here. For the first name, see Peter (disambiguation). For other uses, see Pete (disambiguation). Polyethylene terephthalate fibre IUPAC name …
55Sublimation (chemistry) — Sublimation of an element or compound is a transition from the solid to gas phase with no intermediate liquid stage. Sublimation is an endothermic phase transition that occurs at temperatures and pressures below the triple point (see phase… …
56Central heating — unit A central heating system provides warmth to the whole interior of a building (or portion of a building) from one point to multiple rooms. When combined with other systems in order to control the building climate, the whole system may be a… …
57Liquid breathing — Intervention MeSH D021061 Liquid breathing is a form of respiration in which a normally air breathing organism breathes an oxygen rich liquid (such as a perfluorocarb …
58Solar air conditioning — refers to any air conditioning (cooling) system that uses solar power. This can be done through passive solar, photovoltaic conversion (sun to electricity), or solar thermal energy conversion. The U.S. Energy Independence and Security Act of… …
59MER-A — Mars Exploration Rover Illustration artistique du robot Mars Exploration Rover (MER) est une mission spatiale initiée par les États Unis et confiée à la NASA sur la planète Mars. Elle a pour but une exploration géologique de la planète Mars à la… …
60MER-B — Mars Exploration Rover Illustration artistique du robot Mars Exploration Rover (MER) est une mission spatiale initiée par les États Unis et confiée à la NASA sur la planète Mars. Elle a pour but une exploration géologique de la planète Mars à la… …
